<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><span>It sounds like an AC line problem, but it could be as you suspect. If you could put a recording voltmeter on the AC side of this inverter, perhaps Egauge? I have not looked at line voltage on my egauges only current. HoBo used to make a voltage monitor also. </span></div><div><span>DT</span></div><div><br></div><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"><font size="2" face="Arial"><div style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; line-height: 0; font-size: 0px;" class="hr" contentEditable="false" readonly="true"></div><b><span style="font-weight: bold;">From:</span></b> Jeff Yago <jryago@dtisolar.com><br><b><span style="font-weight:
bold;">To:</span></b> 'RE-wrenches' <re-wrenches@lists.re-wrenches.org><br><b><span style="font-weight: bold;">Sent:</span></b> Monday, October 24, 2011 8:10 AM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [RE-wrenches] Sunny Boy constant off line problem<br></font><br>
We have installed many Sunny Boy grid tie inverters in all size ranges with<br>no problems until this head scratcher. For this client we installed a 4 kW<br>grid tie system 2 years ago that included a 4 kW Sunny Boy inverter. At the<br>time we anticipated this client would want to upsize the ground mounted<br>array located about 180 feet from his home that was all landscaped, so we<br>installed an empty conduit with the required conduit when we dug the trench.<br>A few dollars of PVC might come in handy later. <br><br>This system has worked perfectly for 2 years. Almost a year ago we were<br>called back to install the second system, which was an exact duplicate of<br>the first. Same modules, just lengthened the racking so same orientation,<br>same model inverter, same wire size using the empty conduit we left the<br>first time, and supplying the same breaker panel. Starting several months<br>ago the second Sunny Boy inverter
has started to go off line for no known<br>reason. The first inverter right beside it is "seeing" the same grid, yet<br>it is not having this problem. <br><br>We suspected the added circuit breaker was flaky and replaced it but this<br>did not resolve. The error message always indicates no grid AC. This last<br>time the inverter was off line for 2 days then came on by itself again and<br>is now working just fine. During all this the first inverter worked<br>perfectly. After 3 trips to check out and finding nothing out of place, is<br>it time to send this one back to the factory?<br><br>Jeff Yago<br><br><br>_______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" ymailto="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Options &
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